Reinforcement Study Guide 10/06/14-Test on Thursday

Question 1

4.6 billion years ago earth forms
4 billion years ago a global ocean covers earth
3.4 billion years ago organisms carry out photosynthesis
2.5 billion years ago continents start to grow
2.2 billion years ago simple plants move onto land
1.5 billion years ago the upper mantle becomes heavier

Answer 1

….

Question 2

How did the presence of organisms play a role in changing Earth’s atmosphere?

Answer 2

As organisms made food through photosynthesis more oxygen was added.

Question 3

Sun Diagram

1. Core
2. Radioactive zone
3. Convective Zone
4. Photo sphere (not solid)
5. Chromosphere (not solid, the thinnest layer)
6. Corona (not solid)

Answer 3

….

Question 4

I am the part of the sun that you can see.

Answer 4

Phtosphere

Question 5

I am a very dense layer of the sun that blocks energy

Answer 5

radiative zone

Question 6

I am the sun’s outer atmosphere

Answer 6

corona

Question 7

i am the thin layer below the corona

Answer 7

chromospere

Question 8

i am the layer of the sun where energy is made

Answer 8

core

Question 9

i am the layer of the sun where gases circulate

Answer 9

convective zone